Caio is a distinctive boys' name in United States, ranking #5968 in 2000 with 11 recorded births. This places Caio in the top 49% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2023 with 40 births ranking #3063. Since 1996, the popularity has increased by 57.1%. In 2000, approximately 1 in every 178,539 boys born was named Caio. FALLING Recent data shows the name is currently falling.